Year including construction (constant 2010 US$) 1991 81786.2989915869 1992 80147.7732031921 1993 80136.588303775 1994 84979.1311285171 1995 85730.535904387 1996 86322.2522589594 1997 84738.1877444717 1998 85604.1276808204 1999 88295.2724562769 2000 91597.736300307 2001 91476.9234092657 2002 92513.0931842643 2003 96391.6075658175 2004 98528.7780475385 2005 97962.2254677812 2006 100021.157485251 2007 106671.268561773 2008 110236.955897729 2009 104826.601931015 2010 111626.022941967 2011 117372.279739729 2012 113760.701022771 2013 119820.361484645 2014 122235.855312235 2015 119562.867553641 2016 120796.406545545 2017 123842.508638553 2018 128452.106186172